Undo the circular clip on the air intake - use a screwdriver
Now release the air intake
Undo two circular clips on the air intake - use a screwdriver for this
Remove the air intake hose
Undo the three retaining clips
Carefully lift away the top section of the air filter body
View of the air filter cover
Now you can lift out the air filter
Clean off any debris on the surface of the filter. Replace with a new filter if heavily contaminated
Check air filter box for debris. Clean if required. Now replace the air filter
Reassemble the air filter housing